<!DOCTYPE html>
<html>

<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>日期对象 </title>
  <script type="text/javascript">
    var mydate = new Date();
    document.write("当前时间：" + mydate + "<br>");
    mydate.setTime(mydate.getTime() + 2 * 60 * 60 * 1000);
    document.write("推迟二小时时间：" + mydate);
  </script>
</head>

<body>
</body>

</html>